EP 0635661 B1 19990519 - Electronic shift controls for a multiple ratio automatic transmission
Title (en)
Electronic shift controls for a multiple ratio automatic transmission
Title (de)
Elektronische Schaltsteuerung für ein mehrstufiges automatisches Getriebe
Title (fr)
Régulation électronique de changement des vitesses d'une transmission automatique à plusieurs rapports
Publication
Application
Priority
- EP 91307544 A 19910815
- US 58361490 A 19900914
Abstract (en)
[origin: EP0476832A2] A control system for an automatic transmission for an automotive vehicle having a torque converter and a combustion engine including a microprocessor that is adapted to establish optimum control pressure levels for fluid pressure operated clutch and brake servos that effect gear ratio changes wherein provision is made for adjusting system pressures to maintain ratio shift quality in accordance with variations in a plurality of control sensor inputs including vehicle deceleration during ratio shifting and changes in the rate of change of converter turbine speed wherein optimum servo pressures are maintained following a ratio shift and during a ratio shift as torque capacity of one servo is reduced in synchronism with a torque capacity increase for a companion servo. <IMAGE>
IPC 1-7
IPC 8 full level
F16H 61/00 (2006.01); F16H 61/02 (2006.01); F16H 61/06 (2006.01); F16H 61/08 (2006.01); F16H 61/12 (2006.01); F16H 59/10 (2006.01); F16H 59/24 (2006.01); F16H 59/38 (2006.01); F16H 59/44 (2006.01); F16H 59/48 (2006.01); F16H 61/04 (2006.01); F16H 61/14 (2006.01); F16H 61/64 (2006.01)
CPC (source: EP US)
F16H 61/0021 (2013.01 - EP US); F16H 61/0251 (2013.01 - EP US); F16H 61/061 (2013.01 - EP US); F16H 61/08 (2013.01 - EP US); F16H 61/12 (2013.01 - EP US); F16H 59/10 (2013.01 - EP US); F16H 59/24 (2013.01 - EP US); F16H 59/44 (2013.01 - EP US); F16H 59/48 (2013.01 - EP US); F16H 61/0286 (2013.01 - EP US); F16H 61/029 (2013.01 - EP US); F16H 61/14 (2013.01 - EP US); F16H 61/64 (2013.01 - EP US); F16H 61/686 (2013.01 - EP US); F16H 2059/385 (2013.01 - EP US); F16H 2059/405 (2013.01 - EP US); F16H 2059/425 (2013.01 - EP US); F16H 2061/0087 (2013.01 - EP US); F16H 2061/0096 (2013.01 - EP US); F16H 2061/0444 (2013.01 - EP US); F16H 2061/1232 (2013.01 - EP US); F16H 2061/1292 (2013.01 - EP US); F16H 2302/06 (2013.01 - EP US); F16H 2306/00 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0476832 A2 19920325; EP 0476832 A3 19930707; EP 0476832 B1 19951004; DE 69113567 D1 19951109; DE 69113567 T2 19960328; DE 69130332 D1 19981112; DE 69130332 T2 19990304; DE 69131256 D1 19990624; DE 69131256 T2 19990923; EP 0635661 A2 19950125; EP 0635661 A3 19970806; EP 0635661 B1 19990519; EP 0635662 A2 19950125; EP 0635662 A3 19951025; EP 0635662 B1 19981007; US 5157608 A 19921020
DOCDB simple family (application)
EP 91307544 A 19910815; DE 69113567 T 19910815; DE 69130332 T 19910815; DE 69131256 T 19910815; EP 94114582 A 19910815; EP 94114583 A 19910815; US 58361490 A 19900914